There is a seventh Harry Potter novel, but it has yet to be published. There are six novels in the Harry Potter series: Harry Potter and the Sorcerer's Stone, Harry Potter and the Chamber of Secrets, Harry Potter and the Prisoner of Azkaban, Harry Potter and the Goblet of Fire, Harry Potter and the Order of the Phoenix, and Harry Potter and the Half-Blood Prince.
The 'the wish of the seventh child harry potter fanfic' could potentially be about a lot of things. In the context of Harry Potter, the number seven is often significant. So this seventh child's wish could be related to the prophecy or some hidden mystery in the wizarding world. For example, the child might wish to uncover the true meaning behind a certain ancient spell or to solve a mystery that has been plaguing the wizarding community for generations. Their wish could also be something more personal, like wanting to fit in better at Hogwarts despite being different in some way.
Harry Potter and the Deathly Hallows:
Harry Potter and the Prisoner of Azkaban
Harry Potter and the Chamber of Secrets
Harry Potter and the Goblet of Fire
Harry Potter and the
Harry Potter and the Half-Blood Prince
One interesting plotline could be Harry's further exploration of his connection with Voldemort. Maybe he discovers new magical abilities within himself as a result of this connection. Another could be the relationships between the characters evolving in unexpected ways. For example, Neville could take on a more prominent leadership role among the students.
Harry Potter himself is still very popular in these fanfictions. His growth and final confrontation with Voldemort are often central themes. Hermione Granger also remains a favorite as she uses her intelligence to solve problems. Ron Weasley is there too, especially for his loyalty and humorous moments. And Neville Longbottom is quite popular as well, often shown as a strong and brave character in the seventh year stories.
The seventh Harry Potter movie was released in the UK on September 1, 2011 and was released all over the world. According to the regular novel publishing schedule, the seventh novel is usually published on September 1st every year, so we can predict that it will be published on September 1st, 2019. However, due to the publication date of the novel being affected by many factors such as the author's writing progress, editing, etc., the specific publication date may change.
Neville Longbottom could also be a main character in such fanfiction. Given his growth and importance in the original series, especially in the final battle, he might have an even more significant role in this 'bad seventh year' scenario, perhaps leading some sort of resistance against new threats.
One common theme could be the characters facing unexpected challenges during their seventh year at Hogwarts that deviate from the original story. For example, there might be new dark forces emerging that the trio has to deal with.